diff --git a/beetsplug/fetchart.py b/beetsplug/fetchart.py
index 1eb139602..0b020c8f1 100644
--- a/beetsplug/fetchart.py
+++ b/beetsplug/fetchart.py
@@ -42,7 +42,7 @@ CONTENT_TYPES = ('image/jpeg', 'image/png')
 DOWNLOAD_EXTENSION = '.jpg'
 
 
-class Candidate():
+class Candidate(object):
     """Holds information about a matching artwork, deals with validation of
     dimension restrictions and resizing.
     """